2011 Toyota Tundra Grade 5.7L V8 w/FFV 4×4 Crew Max 5.6 ft. box 145.7 in. WB has front head room since 40″ but the corresponding head room in the rear side is given since 39″. Front shoulder room and rear shoulder room are as 67″ and 65″. If front leg room is 42.5″, the corresponding rear leg room is 44.5″.